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MacroGenics Announces Removal of Partial Clinical Hold on MGD009 Program by FDA

ROCKVILLE, MD, Jan. 25, 2019 (GLOBE NEWSWIRE) -- MacroGenics, Inc. (NASDAQ: MGNX), a clinical-stage biopharmaceutical company focused on discovering and developing innovative monoclonal antibody-based therapeutics for the treatment of cancer, today announced that the U.S. Food and Drug Administration (FDA) has lifted the partial clinical hold on its Phase 1 monotherapy and combination studies of MGD009, a B7-H3 A? CD3 bispecific DARTA® molecule. Enrollment of new patients in the U.S. has been cleared to proceed with these trials. MacroGenics previously announced on December 7, 2018, that the FDA had placed the program on partial clinical hold following MacroGenicsa?? reporting of hepatic adverse events on the MGD009 trials to the FDA. During the partial clinical hold, previously enrolled study participants were allowed to continue to receive drug at their pre-assigned dose. a??The MacroGenics team worked diligently and rapidly to provide a comprehensive response to the FDA in late December. As a result, we have been able to resolve the partial clinical hold without significant delay to this clinical program,a?? stated Scott Koenig, M.D., Ph.D., President and CEO of MacroGenics. a??The partial clinical hold did not involve our other B7-H3 programs, and, in fact, during the partial hold, we completed enrollment of the first dose escalation cohort for MGC018, our B7-H3-targeted ADC.a??About MGD009MGD009 is a humanized, bispecific DART molecule that recognizes both B7-H3 and CD3 and has a prolonged serum half-life. B7-H3 is a member of the B7 family of molecules involved in immune regulation and is over-expressed on a wide variety of cancer cells, including cancer stem cells, as well as on the supporting tumor vasculature and underlying tissues, or stroma. The intended mechanism of action of MGD009 is its ability to redirect T cells, via their CD3 component, to kill B7-H3-expressing cells.In addition to MGD009, MacroGenicsa?? comprehensive B7-H3 franchise includes enoblituzumab, an Fc-optimized monoclonal antibody, as well as MGC018, an antibody-drug conjugate. These clinical molecules target B7-H3. MacroGenics retains worldwide rights to its franchise of three B7-H3-based molecules.About MacroGenics, Inc.MacroGenics is a clinical-stage biopharmaceutical company focused on discovering and developing innovative monoclonal antibody-based therapeutics for the treatment of cancer. The Company generates its pipeline of product candidates primarily from its proprietary suite of next-generation antibody-based technology platforms, which have applicability across broad therapeutic domains. The combination of MacroGenics' technology platforms and protein engineering expertise has allowed the Company to generate promising product candidates and enter into several strategic collaborations with global pharmaceutical and biotechnology companies. For more information, please see the Company's website at www.macrogenics.com. MacroGenics, the MacroGenics logo and DART are trademarks or registered trademarks of MacroGenics, Inc.Cautionary Note on Forward-Looking StatementsAny statements in this press release about future expectations, plans and prospects for the Company, including statements about the Company's strategy, future operations, clinical development of the Company's therapeutic candidates, milestone or opt-in payments from the Company's collaborators, the Company's anticipated milestones and future expectations and plans and prospects for the Company and other statements containing the words "subject to", "believe", "anticipate", "plan", "expect", "intend", "estimate", "project", "may", "will", "should", "would", "could", "can", the negatives thereof, variations thereon and similar expressions, or by discussions of strategy constitute forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. Actual results may differ materially from those indicated by such forward-looking statements as a result of various important factors, including: the risk of delays or failure in reaching an agreement with the FDA regarding the release of a clinical hold, the uncertainties inherent in the initiation and enrollment of future clinical trials, expectations of expanding ongoing clinical trials, availability and timing of data from ongoing clinical trials, expectations for regulatory approvals, other matters that could affect the availability or commercial potential of the Company's product candidates and other risks described in the Company's filings with the Securities and Exchange Commission. In addition, the forward-looking statements included in this press release represent the Company's views only as of the date hereof. The Company anticipates that subsequent events and developments will cause the Company's views to change. However, while the Company may elect to update these forward-looking statements at some point in the future, the Company specifically disclaims any obligation to do so, except as may be required by law. These forward-looking statements should not be relied upon as representing the Company's views as of any date subsequent to the date hereof.###
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